import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import com.gargoylesoftware.htmlunit.WebClient;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;


/**
 * 文件下载demo
 *
 *
 */
public class DownloadHelper {
    public static void HttpClientDownload(String remoteFile) {
        HttpClient client = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(remoteFile);
        try {
            HttpResponse response = client.execute(httpGet);

            InputStream in = response.getEntity().getContent();

            FileOutputStream out = new FileOutputStream(new File("C:\\log\\123.xls"));

            byte[] b = new byte[1024];
            int len = 0;
            while ((len = in.read(b)) != -1) {
                out.write(b, 0, len);
            }
            in.close();
            out.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void HtmlUnitDownload(String remoteFile) {
        try {
            final WebClient webClient = new WebClient();
            InputStream in  = webClient.getPage(remoteFile).getWebResponse().getContentAsStream();

            FileOutputStream out = new FileOutputStream(new File("C:\\log\\report.xls"));

            byte[] b = new byte[1024];
            int len = 0;
            while ((len = in.read(b)) != -1) {
                out.write(b, 0, len);
            }
            in.close();
            out.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}